package com.dk.util;

public class ComUtil {
    public static int add(int a, int b){
        int sum=a+b;
        System.out.println(a+"+"+b+"="+sum);
        return sum;
    }
    public  int subert(int a, int b){
        int sum=a-b;
        System.out.println(a+"-"+b+"="+sum);
        return sum;
    }
}
